uml diagram symbols

In the previous article "UML System Analysis and Design 02-use case diagram and activity diagram (I)", we mainly explained the use case analysis and drawing methods and techniques in requirement analysis, however, the use case diagram only tells us what the system wants to do. As for how to do it, there is no intuitive

Blog Park Flash Home new essay contact management subscribe Essays-295 Articles-111 reviews-6633 STARUML---Recommend a uml tool (very good very strong) Last week a friend of mine, who is also a colleague of the company, recommended a UML tool for me to start using, but the more I used it, the more I felt good, I even want to delete the rose on the machine, directly with this software, I heard that this soft

device or a software system running on a hardware device. -UML Representation　　　　　　　　　-node instance: the instance form of the node. The format is instance Name:node, similar to the class instance format, preceded by a colon with an instance name or without an instance name　　　　　　　　　　　　　　-node type : Depending on whether the node is capable of-Processor: A node with the ability to perform software operations such as calculation and execution-Devi

Uml-unified Model Language Unified Modeling Language, also known as standard modeling language. is a language used to visualize modeling software-intensive systems.There are three main models in UML system development:Functional Model: Display the function of the system from the user's point of view, including use case diagram.Object model: Using the concepts of object, attribute, operation and correlation

lower right corner of the class name will have an (abstract), if the person is an abstract class, then the UML class diagram is as followsProperty nameThe attribute names in UML are member variables in Java, and of course a class can have no attributes or any number of properties. modifiers, types, and default values for member variables in Java classes can be r

, and generalized, mainly involving components and components, between components and interfaces, and between interfaces and interfaces. implementation : The relationship between a component and an interface dependencies : The relationship between components and components If there is a dependency on two classes in two components, the relationship between the two components can be expressed as a dependency relationship generalization : between compon

Through the previous blog: the use case diagram of UML diagrams, we have completed the division of a software system use case and function module. Now we need to know how to further improve the static structure of the system. With the UML tool, we can obtain the static diagram of the static structure of the software s

can be a signal, event, condition Change (a-in some condition) and time expression.Policing Conditions (Guard Condition): When the police condition is met, the event will not cause a transfer (Transition). result (Effect): The result of the object's state transition. Actionactions (Actions) in a UML state diagram are an executable atomic operation, which means that the action is non-interruptible and its e

Document directory Add a self-called Message Element Use the call Message Element Use auto-extended message options Use to create a message symbol Add asynchronous Link Use a combination of fragment Elements Save Graph A sequence diagram describes the interaction modes between objects in chronological order. It uses the "lifeline" of objects and the messages passed between them to show how objects participate in interaction. A sequence

UML Construction Design Model A. Class diagram two. Package Diagram three. Assembly Diagram Four. Deployment Diagram I. Class Diagram 1. Classes: Classes are represented by dig: class names, class properties, operations of cla

PrefaceIn the summary of the UML state diagram, the activity diagram and the state diagram are closely related. It also has a lot in common with flowcharts.definitionAn activity diagram is a special form of a state diagram. All or

the relationships between classes Inheritance Relationship An inheritance relationship is the most understandable relationship. The picture is like this. The object-oriented argument is the is-a relationship. That is to say Class2 is a Class1. In C + + we say that Class2 is a derived class of Class1, or that Class1 is the base class for Class2. Aggregation and Composition Start with a relationship that is easy to understand. There is often a case where a class is a data member of another class.